[opt](nereids) refine expression estimation

xzj7019 · Sep 11, 2024 · e75189d · e75189d
1 parent 1a6b92e
commit e75189d
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/ExpressionEstimation.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/ExpressionEstimation.java
@@ -457,7 +457,14 @@ public ColumnStatistic visitBoundFunction(BoundFunction boundFunction, Statistic
     @Override
     public ColumnStatistic visitAggregateExpression(AggregateExpression aggregateExpression,
             Statistics context) {
-        return aggregateExpression.child().accept(this, context);
+        ColumnStatistic columnStat = aggregateExpression.child().accept(this, context);
+        if (columnStat.isUnKnown) {
+            return ColumnStatistic.UNKNOWN;
+        }
+        return new ColumnStatisticBuilder(columnStat)
+                .setMinExpr(null).setMinValue(Double.NEGATIVE_INFINITY)
+                .setMaxExpr(null).setMaxValue(Double.POSITIVE_INFINITY)
+                .build();
     }
 
     @Override